Endo-block



FIG. 1 is a perspective view thereof;

FIG. 2 is a side elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a side elevational view of one of the two block elementsthereof;

FIG. 5 is a cross-sectional view taken along line 5--5 of FIG. 4; and,

FIG. 6 is a cross-sectional view taken along line 6--6 of FIG. 4.

The ornamental design for an endo-block, as shown and described.